Learning Node.js Development

Installing yargs

Before we can get started doing any encoding, we have to get the address from the user, and before we can set up yargs we have to install it. In the Terminal, we'll run the npm install command, the module name is yargs, and we'll look for version 10.1.1, which is the latest version at the time of writing. We'll use the save flag to run this installation, as shown in the following screenshot:

Now the save flag is great because as you remember. It updates the package.json file and that's exactly what we want. This means that we can get rid of the node modules folder which takes up a ton of space, but we can always regenerate ...